mcgrew



JOHN MOGREW, OF RAVENSWOOD, WEST VIRGINIA, ASSIGNOR TO HIMSELF ANDMARGARET J. SMITH, OF SAME PLACE. 1

IMPROVEMENT IN STAVE-JOEN'TERS.

Specification forming part of Letters Patent No. 133,469, dated November26, 1872.

To all whom it may concern:

Be it known thatI, JOHN McGREW, of

Ravenswood, in the county of Jackson -and State of West Virginia, haveinvented an Innproved Stave-Jointer, of which the following is aspecification: The invent-ion consists in arranging one or morepairs ofangle-shaped knives to reciprocate over a bearing-roll, over which thehoop is drawn for the purpose of being notched and being made to takethe bulge necessary in barrels. Secondly, theinvention consists in apeculiar mode of intermittently moving the roll while the said notchesare out, as hereinafter fully described.

A represents the frame of the machine, and B the driving-shaft which isjournaled therein. 0 O are two angle-shaped jointingknives, whichalternately cut out V-shaped pieces from the hoop, as it rests upon acylinder, D, directly beneath said knives. These notches are not formedopposite to each other, and are intended to allow the hoop to take thebulge required. These knives O O slide up and down in the guide E, andare actuated by pivoted bars, F F, having yokes on their ends, and bycams g g of the driving-shaft G. In order to feed the hoopintermittently before the knives I employ the two ratchets H H, withcarrying- I pawls I I, to rotate it a given distance alternately, and anotched wheel, J, and detent K,

to hold the roll stationary when the knives are at work. L represents ahinged bearing piece for the roller-shaft, provided with latch 1,

whereby the roll may be easily and conveniently made to receive thehoops for each barrel that have been cut from the convolute strip. M isa revolving shaft on whose end is placed a disk, on. In slots of thisdisk are placed the crozing-tool N, chaniferer O, andtwo edgetrirnmers,P P.

The barrel having been formed, the edge of one end and then of the otheris placed under and against the outer edge of disk, While the shaft Mrevolves and the barrel is stationary. The tool N then cuts the croze orcircular groove into which the head fits, the tool 0 cuts the innerbevel, and the tools P P trim the top edge of barrel. The tools N O areattached to lever-stocks Q Q, which are pivoted and caused, by springsor a sliding. ring, R, to be fed gradually to the barrel as they dotheir work.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, isv 1. The jointer provided with one or morepairs of angle-knives, 0 0, arranged to operate alternately upondifferent edges of blank, as and for the purpose set forth. I

2. The ratchets H H, pawls I I, notched wheel J, and detent K, combinedand operated in connection with roll D, as and for the purposedescribed.

JOHN McGREW. Witnesses:

SoLoN 0. KEMoN, CHAS. A. PETTIT.

